96 BULLETIN 131, UNITED STATES NATIONAL MUSEUM 



from the Hercules and Blue Bibb on mines. Ore from the Black 

 Pine mine shows disseminated galena in quartz with gold, pyrite, 

 sphalerite and tetrahedrite. The gold occurs as small grains around 

 the borders of the galena grains. 



Galena appears in similar manner in most of the gold mines of the 

 county. 



KOOTENAI COUNTY 



In the Lakeview District south of the south end of Lake Pend 

 d' Oreille galena occurs in a number of silver mines and prospects 

 associated with tetrahedrite, etc. 



LATAH COUNTY 



In Latah County moderate amounts of galena have been mined 

 from the Snowshoe mine near Troy. 



LEMHI COUNTY 



In the Blue Wing district galena is present in small amounts in 

 the ores associated with pyrite, sphalerite, tetrahedrite, hubnerite, 

 molybdenite, and chalcopyrite. It forms fine grained masses and 

 a few small cubes. It is not conspicuous in the ore. 67 



In the Carmen Creek district galena occurs in small amount with 

 pyrite, chalcopyrite, and sphalerite in unoxidized remnants of pri- 

 mary gold ore in the Oro Cache mine. 



In the Eldorado (Geertson) district a very little galena is associated 

 with gold in the Eldorado and Ranger mines. 



In the Eureka district galena occurs rarely in gold ores of the 

 U. P. & Burlington, Queen of the Hills, and Tenday mines. 



In the Junction district lead-silver ore is mined in the Leadville 

 mine and a number of prospects. The ore of this mine is predom- 

 inantly fine grained steel galena with some pyrite and very rare 

 chalcopyrite and sphalerite. 



In the Kirtley Creek district the White Horse gold lode contains 

 a little galena associated with pyrite and chalcopyrite. 



In the Mackinaw district a subordinate amount of galena occurs 

 in gold ore on the Italian property. It is associated with chalcopyrite 

 and sphalerite and pyrite in coarse textured bluish white quartz 

 Galena bearing lead ore is reported from the Bull of the Woods 

 mine near Leesburg. 



The gold ore of the Goldstone mine in the Pratt Creek district 

 shows galena in scattered grains, with chalcopyrite in quartz. 



The Spring Mountain district is a lead-silver mining region in 

 which a number of mines have produced ores from veins in limestone. 

 The ore is galena, in considerable part oxidized. The Lemhi Union, 

 Colorado, Elizabeth, Teddy, Red Warrior, Iron Mask, Galena, and 

 Excelsior are important mines. 



» J. B. Umpleby. U. S. Qeol. Surv. Bull. 528, p. Ill, 1913. 



